I have a 543 with a stock 440 block, aluminum caps and a girdle. Victor heads, solid roller cam, 1050 dominator It is in a 68 barracuda with a 4 speed and a dana 60 with 4.56's.

The car is apart right now, and I have been 2 busy building other peoples cars to work on my own junk. Maybe sometime next year it will be done. AND yes i know ill break parts.

I spun it to 6500 RPMS before with a 727 behind it and 4.10s in the rear on 26" tall tires. Just on the street and no traction.

I don't plan on taking it to much over 5k rpms, and I may add a little boost to it, small turbo and EFI keep the rpms down even more but make lots of power.